/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2013 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2021 Guus Sliepen <guus@tinc-vpn.org>
2006 Scott Lamb <slamb@slamb.org>
2010 Brandon Black <blblack@gmail.com>
#include "system.h"
#include "cipher.h"
+#include "conf_net.h"
#include "conf.h"
#include "connection.h"
+#include "compression.h"
#include "control.h"
+#include "crypto.h"
#include "device.h"
#include "digest.h"
#include "ecdsa.h"
#include "process.h"
#include "protocol.h"
#include "route.h"
-#include "rsa.h"
#include "script.h"
#include "subnet.h"
#include "utils.h"
#include "xalloc.h"
+#include "keys.h"
+#include "sandbox.h"
-char *myport;
+#ifdef HAVE_MINIUPNPC
+#include "upnp.h"
+#endif
+
+ports_t myport;
static io_t device_io;
devops_t devops;
+bool device_standby = false;
+
+char *proxyhost = NULL;
+char *proxyport = NULL;
+char *proxyuser = NULL;
+char *proxypass = NULL;
-char *proxyhost;
-char *proxyport;
-char *proxyuser;
-char *proxypass;
proxytype_t proxytype;
-int autoconnect;
+bool autoconnect;
bool disablebuggypeers;
char *scriptinterpreter;
char *scriptextension;
bool node_read_ecdsa_public_key(node_t *n) {
- if(ecdsa_active(n->ecdsa))
+ if(ecdsa_active(n->ecdsa)) {
return true;
+ }
- splay_tree_t *config_tree;
FILE *fp;
char *pubname = NULL;
char *p;
- init_configuration(&config_tree);
- if(!read_host_config(config_tree, n->name))
+ splay_tree_t config;
+ init_configuration(&config);
+
+ if(!read_host_config(&config, n->name, true)) {
goto exit;
+ }
- /* First, check for simple ECDSAPublicKey statement */
+ /* First, check for simple Ed25519PublicKey statement */
- if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) {
+ if(get_config_string(lookup_config(&config, "Ed25519PublicKey"), &p)) {
n->ecdsa = ecdsa_set_base64_public_key(p);
free(p);
goto exit;
}
- /* Else, check for ECDSAPublicKeyFile statement and read it */
+ /* Else, check for Ed25519PublicKeyFile statement and read it */
- if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &pubname))
+ if(!get_config_string(lookup_config(&config, "Ed25519PublicKeyFile"), &pubname)) {
xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
+ }
fp = fopen(pubname, "r");
- if(!fp)
+ if(!fp) {
goto exit;
+ }
n->ecdsa = ecdsa_read_pem_public_key(fp);
fclose(fp);
exit:
- exit_configuration(&config_tree);
+ splay_empty_tree(&config);
free(pubname);
return n->ecdsa;
}
-bool read_ecdsa_public_key(connection_t *c) {
- if(ecdsa_active(c->ecdsa))
- return true;
-
- FILE *fp;
- char *fname;
- char *p;
-
- if(!c->config_tree) {
- init_configuration(&c->config_tree);
- if(!read_host_config(c->config_tree, c->name))
- return false;
- }
-
- /* First, check for simple ECDSAPublicKey statement */
-
- if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) {
- c->ecdsa = ecdsa_set_base64_public_key(p);
- free(p);
- return c->ecdsa;
- }
-
- /* Else, check for ECDSAPublicKeyFile statement and read it */
-
- if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
-
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s",
- fname, strerror(errno));
- free(fname);
- return false;
- }
-
- c->ecdsa = ecdsa_read_pem_public_key(fp);
- fclose(fp);
-
- if(!c->ecdsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname);
- free(fname);
- return c->ecdsa;
-}
-
-bool read_rsa_public_key(connection_t *c) {
- if(ecdsa_active(c->ecdsa))
- return true;
-
- FILE *fp;
- char *fname;
- char *n;
-
- /* First, check for simple PublicKey statement */
-
- if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
- c->rsa = rsa_set_hex_public_key(n, "FFFF");
- free(n);
- return c->rsa;
- }
-
- /* Else, check for PublicKeyFile statement and read it */
-
- if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
-
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
- free(fname);
- return false;
- }
-
- c->rsa = rsa_read_pem_public_key(fp);
- fclose(fp);
-
- if(!c->rsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
- free(fname);
- return c->rsa;
-}
-
-static bool read_ecdsa_private_key(void) {
- FILE *fp;
- char *fname;
-
- /* Check for PrivateKeyFile statement and read it */
-
- if(!get_config_string(lookup_config(config_tree, "ECDSAPrivateKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "ecdsa_key.priv", confbase);
-
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file `%s': %s", fname, strerror(errno));
- if(errno == ENOENT)
- logger(DEBUG_ALWAYS, LOG_INFO, "Create an ECDSA keypair with `tinc -n %s generate-ecdsa-keys'.", netname ?: ".");
- free(fname);
- return false;
- }
-
-#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
- struct stat s;
-
- if(fstat(fileno(fp), &s)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat ECDSA private key file `%s': %s'", fname, strerror(errno));
- free(fname);
- return false;
- }
-
- if(s.st_mode & ~0100700)
- logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA private key file `%s'!", fname);
-#endif
-
- myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
- fclose(fp);
-
- if(!myself->connection->ecdsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
- free(fname);
- return myself->connection->ecdsa;
-}
-
static bool read_invitation_key(void) {
FILE *fp;
- char *fname;
+ char fname[PATH_MAX];
if(invitation_key) {
ecdsa_free(invitation_key);
invitation_key = NULL;
}
- xasprintf(&fname, "%s" SLASH "invitations" SLASH "ecdsa_key.priv", confbase);
+ snprintf(fname, sizeof(fname), "%s" SLASH "invitations" SLASH "ed25519_key.priv", confbase);
fp = fopen(fname, "r");
if(fp) {
invitation_key = ecdsa_read_pem_private_key(fp);
fclose(fp);
- if(!invitation_key)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
- }
- free(fname);
- return invitation_key;
-}
-
-static bool read_rsa_private_key(void) {
- FILE *fp;
- char *fname;
- char *n, *d;
-
- /* First, check for simple PrivateKey statement */
-
- if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) {
- if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!");
- free(d);
- return false;
+ if(!invitation_key) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
}
- myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
- free(n);
- free(d);
- return myself->connection->rsa;
- }
-
- /* Else, check for PrivateKeyFile statement and read it */
-
- if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase);
-
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA private key file `%s': %s",
- fname, strerror(errno));
- free(fname);
- return false;
}
-#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
- struct stat s;
-
- if(fstat(fileno(fp), &s)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno));
- free(fname);
- return false;
- }
-
- if(s.st_mode & ~0100700)
- logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
-#endif
-
- myself->connection->rsa = rsa_read_pem_private_key(fp);
- fclose(fp);
-
- if(!myself->connection->rsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
- free(fname);
- return myself->connection->rsa;
+ return invitation_key;
}
+#ifndef DISABLE_LEGACY
static timeout_t keyexpire_timeout;
static void keyexpire_handler(void *data) {
regenerate_key();
- timeout_set(data, &(struct timeval){keylifetime, rand() % 100000});
+ timeout_set(data, &(struct timeval) {
+ keylifetime, jitter()
+ });
}
+#endif
void regenerate_key(void) {
logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
send_key_changed();
+
+ for splay_each(node_t, n, &node_tree) {
+ n->status.validkey_in = false;
+ }
}
-/*
- Read Subnets from all host config files
-*/
-void load_all_subnets(void) {
+void load_all_nodes(void) {
DIR *dir;
struct dirent *ent;
- char *dname;
+ char dname[PATH_MAX];
- xasprintf(&dname, "%s" SLASH "hosts", confbase);
+ snprintf(dname, sizeof(dname), "%s" SLASH "hosts", confbase);
dir = opendir(dname);
+
if(!dir) {
logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
- free(dname);
return;
}
while((ent = readdir(dir))) {
- if(!check_id(ent->d_name))
+ if(!check_id(ent->d_name)) {
continue;
+ }
node_t *n = lookup_node(ent->d_name);
- #ifdef _DIRENT_HAVE_D_TYPE
- //if(ent->d_type != DT_REG)
- // continue;
- #endif
- splay_tree_t *config_tree;
- init_configuration(&config_tree);
- read_config_options(config_tree, ent->d_name);
- read_host_config(config_tree, ent->d_name);
+ splay_tree_t config;
+ init_configuration(&config);
+ read_config_options(&config, ent->d_name);
+ read_host_config(&config, ent->d_name, true);
if(!n) {
- n = new_node();
- n->name = xstrdup(ent->d_name);
+ n = new_node(ent->d_name);
node_add(n);
}
- for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
- subnet_t *s, *s2;
+ if(strictsubnets) {
+ for(config_t *cfg = lookup_config(&config, "Subnet"); cfg; cfg = lookup_config_next(&config, cfg)) {
+ subnet_t *s, *s2;
- if(!get_config_subnet(cfg, &s))
- continue;
+ if(!get_config_subnet(cfg, &s)) {
+ continue;
+ }
- if((s2 = lookup_subnet(n, s))) {
- s2->expires = -1;
- } else {
- subnet_add(n, s);
+ if((s2 = lookup_subnet(n, s))) {
+ s2->expires = -1;
+ free(s);
+ } else {
+ subnet_add(n, s);
+ }
}
}
- exit_configuration(&config_tree);
- }
-
- closedir(dir);
-}
-
-void load_all_nodes(void) {
- DIR *dir;
- struct dirent *ent;
- char *dname;
-
- xasprintf(&dname, "%s" SLASH "hosts", confbase);
- dir = opendir(dname);
- if(!dir) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
- free(dname);
- return;
- }
-
- while((ent = readdir(dir))) {
- if(!check_id(ent->d_name))
- continue;
-
- node_t *n = lookup_node(ent->d_name);
- if(n)
- continue;
+ if(lookup_config(&config, "Address")) {
+ n->status.has_address = true;
+ }
- n = new_node();
- n->name = xstrdup(ent->d_name);
- node_add(n);
+ splay_empty_tree(&config);
}
closedir(dir);
}
-
char *get_name(void) {
char *name = NULL;
+ char *returned_name;
- get_config_string(lookup_config(config_tree, "Name"), &name);
+ get_config_string(lookup_config(&config_tree, "Name"), &name);
- if(!name)
+ if(!name) {
return NULL;
+ }
- if(*name == '$') {
- char *envname = getenv(name + 1);
- char hostname[32] = "";
- if(!envname) {
- if(strcmp(name + 1, "HOST")) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid Name: environment variable %s does not exist\n", name + 1);
- return false;
- }
- if(gethostname(hostname, sizeof hostname) || !*hostname) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not get hostname: %s\n", strerror(errno));
- return false;
- }
- hostname[31] = 0;
- envname = hostname;
- }
- free(name);
- name = xstrdup(envname);
- for(char *c = name; *c; c++)
- if(!isalnum(*c))
- *c = '_';
+ returned_name = replace_name(name);
+ free(name);
+ return returned_name;
+}
+
+static void read_interpreter(void) {
+ char *interpreter = NULL;
+ get_config_string(lookup_config(&config_tree, "ScriptsInterpreter"), &interpreter);
+
+ if(!interpreter || (sandbox_can(START_PROCESSES, AFTER_SANDBOX) && sandbox_can(USE_NEW_PATHS, AFTER_SANDBOX))) {
+ free(scriptinterpreter);
+ scriptinterpreter = interpreter;
+ return;
}
- if(!check_id(name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!");
- free(name);
- return false;
+ if(!string_eq(interpreter, scriptinterpreter)) {
+ logger(DEBUG_ALWAYS, LOG_NOTICE, "Not changing ScriptsInterpreter because of sandbox.");
}
- return name;
+ free(interpreter);
}
bool setup_myself_reloadable(void) {
- char *proxy = NULL;
- char *rmode = NULL;
- char *fmode = NULL;
- char *bmode = NULL;
- char *afname = NULL;
- char *address = NULL;
- char *space;
- bool choice;
-
- free(scriptinterpreter);
- scriptinterpreter = NULL;
- get_config_string(lookup_config(config_tree, "ScriptsInterpreter"), &scriptinterpreter);
-
+ read_interpreter();
free(scriptextension);
- if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &scriptextension))
+
+ if(!get_config_string(lookup_config(&config_tree, "ScriptsExtension"), &scriptextension)) {
scriptextension = xstrdup("");
+ }
+
+ char *proxy = NULL;
+
+ get_config_string(lookup_config(&config_tree, "Proxy"), &proxy);
- get_config_string(lookup_config(config_tree, "Proxy"), &proxy);
if(proxy) {
- if((space = strchr(proxy, ' ')))
+ char *space;
+
+ if((space = strchr(proxy, ' '))) {
*space++ = 0;
+ }
if(!strcasecmp(proxy, "none")) {
proxytype = PROXY_NONE;
} else if(!strcasecmp(proxy, "http")) {
proxytype = PROXY_HTTP;
} else if(!strcasecmp(proxy, "exec")) {
- proxytype = PROXY_EXEC;
+ if(sandbox_can(START_PROCESSES, AFTER_SANDBOX)) {
+ proxytype = PROXY_EXEC;
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Cannot use exec proxies with current sandbox level.");
+ return false;
+ }
} else {
logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy);
+ free_string(proxy);
return false;
}
+ free(proxyhost);
+ proxyhost = NULL;
+
+ free(proxyport);
+ proxyport = NULL;
+
+ free_string(proxyuser);
+ proxyuser = NULL;
+
+ free_string(proxypass);
+ proxypass = NULL;
+
switch(proxytype) {
- case PROXY_NONE:
- default:
- break;
+ case PROXY_NONE:
+ default:
+ break;
+
+ case PROXY_EXEC:
+ if(!space || !*space) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
+ free_string(proxy);
+ return false;
+ }
- case PROXY_EXEC:
- if(!space || !*space) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
- return false;
- }
- proxyhost = xstrdup(space);
- break;
+ if(!sandbox_can(USE_NEW_PATHS, AFTER_SANDBOX)) {
+ logger(DEBUG_ALWAYS, LOG_NOTICE, "Changed exec proxy may fail to work because of sandbox.");
+ }
- case PROXY_SOCKS4:
- case PROXY_SOCKS4A:
- case PROXY_SOCKS5:
- case PROXY_HTTP:
- proxyhost = space;
- if(space && (space = strchr(space, ' ')))
- *space++ = 0, proxyport = space;
- if(space && (space = strchr(space, ' ')))
- *space++ = 0, proxyuser = space;
- if(space && (space = strchr(space, ' ')))
- *space++ = 0, proxypass = space;
- if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
- return false;
- }
- proxyhost = xstrdup(proxyhost);
- proxyport = xstrdup(proxyport);
- if(proxyuser && *proxyuser)
- proxyuser = xstrdup(proxyuser);
- if(proxypass && *proxypass)
- proxypass = xstrdup(proxypass);
- break;
+ proxyhost = xstrdup(space);
+ break;
+
+ case PROXY_SOCKS4:
+ case PROXY_SOCKS4A:
+ case PROXY_SOCKS5:
+ case PROXY_HTTP:
+ proxyhost = space;
+
+ if(space && (space = strchr(space, ' '))) {
+ *space++ = 0, proxyport = space;
+ }
+
+ if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
+ proxyport = NULL;
+ proxyhost = NULL;
+ free_string(proxy);
+ return false;
+ }
+
+ if(space && (space = strchr(space, ' '))) {
+ *space++ = 0, proxyuser = space;
+ }
+
+ if(space && (space = strchr(space, ' '))) {
+ *space++ = 0, proxypass = space;
+ }
+
+ proxyhost = xstrdup(proxyhost);
+ proxyport = xstrdup(proxyport);
+
+ if(proxyuser && *proxyuser) {
+ proxyuser = xstrdup(proxyuser);
+ }
+
+ if(proxypass && *proxypass) {
+ proxypass = xstrdup(proxypass);
+ }
+
+ break;
}
- free(proxy);
+ free_string(proxy);
}
- if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
+ bool choice;
+
+ if(get_config_bool(lookup_config(&config_tree, "IndirectData"), &choice) && choice) {
myself->options |= OPTION_INDIRECT;
+ }
- if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
+ if(get_config_bool(lookup_config(&config_tree, "TCPOnly"), &choice) && choice) {
myself->options |= OPTION_TCPONLY;
+ }
- if(myself->options & OPTION_TCPONLY)
+ if(myself->options & OPTION_TCPONLY) {
myself->options |= OPTION_INDIRECT;
+ }
- get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
- get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
+ get_config_bool(lookup_config(&config_tree, "UDPDiscovery"), &udp_discovery);
+ get_config_int(lookup_config(&config_tree, "UDPDiscoveryKeepaliveInterval"), &udp_discovery_keepalive_interval);
+ get_config_int(lookup_config(&config_tree, "UDPDiscoveryInterval"), &udp_discovery_interval);
+ get_config_int(lookup_config(&config_tree, "UDPDiscoveryTimeout"), &udp_discovery_timeout);
- memset(&localdiscovery_address, 0, sizeof localdiscovery_address);
- if(get_config_string(lookup_config(config_tree, "LocalDiscoveryAddress"), &address)) {
- struct addrinfo *ai = str2addrinfo(address, myport, SOCK_DGRAM);
- free(address);
- if(!ai)
- return false;
- memcpy(&localdiscovery_address, ai->ai_addr, ai->ai_addrlen);
- }
+ get_config_int(lookup_config(&config_tree, "MTUInfoInterval"), &mtu_info_interval);
+ get_config_int(lookup_config(&config_tree, "UDPInfoInterval"), &udp_info_interval);
+ get_config_bool(lookup_config(&config_tree, "DirectOnly"), &directonly);
+ get_config_bool(lookup_config(&config_tree, "LocalDiscovery"), &localdiscovery);
- if(get_config_string(lookup_config(config_tree, "Mode"), &rmode)) {
- if(!strcasecmp(rmode, "router"))
+ char *rmode = NULL;
+
+ if(get_config_string(lookup_config(&config_tree, "Mode"), &rmode)) {
+ if(!strcasecmp(rmode, "router")) {
routing_mode = RMODE_ROUTER;
- else if(!strcasecmp(rmode, "switch"))
+ } else if(!strcasecmp(rmode, "switch")) {
routing_mode = RMODE_SWITCH;
- else if(!strcasecmp(rmode, "hub"))
+ } else if(!strcasecmp(rmode, "hub")) {
routing_mode = RMODE_HUB;
- else {
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
+ free(rmode);
return false;
}
+
free(rmode);
}
- if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
- if(!strcasecmp(fmode, "off"))
+ char *fmode = NULL;
+
+ if(get_config_string(lookup_config(&config_tree, "Forwarding"), &fmode)) {
+ if(!strcasecmp(fmode, "off")) {
forwarding_mode = FMODE_OFF;
- else if(!strcasecmp(fmode, "internal"))
+ } else if(!strcasecmp(fmode, "internal")) {
forwarding_mode = FMODE_INTERNAL;
- else if(!strcasecmp(fmode, "kernel"))
+ } else if(!strcasecmp(fmode, "kernel")) {
forwarding_mode = FMODE_KERNEL;
- else {
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
+ free(fmode);
return false;
}
+
free(fmode);
}
- choice = true;
- get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice);
- if(choice)
+ choice = !(myself->options & OPTION_TCPONLY);
+ get_config_bool(lookup_config(&config_tree, "PMTUDiscovery"), &choice);
+
+ if(choice) {
myself->options |= OPTION_PMTU_DISCOVERY;
+ }
choice = true;
- get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice);
- if(choice)
+ get_config_bool(lookup_config(&config_tree, "ClampMSS"), &choice);
+
+ if(choice) {
myself->options |= OPTION_CLAMP_MSS;
+ }
- get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
- get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl);
- if(get_config_string(lookup_config(config_tree, "Broadcast"), &bmode)) {
- if(!strcasecmp(bmode, "no"))
+ get_config_bool(lookup_config(&config_tree, "PriorityInheritance"), &priorityinheritance);
+ get_config_bool(lookup_config(&config_tree, "DecrementTTL"), &decrement_ttl);
+
+ char *bmode = NULL;
+
+ if(get_config_string(lookup_config(&config_tree, "Broadcast"), &bmode)) {
+ if(!strcasecmp(bmode, "no")) {
broadcast_mode = BMODE_NONE;
- else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst"))
+ } else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst")) {
broadcast_mode = BMODE_MST;
- else if(!strcasecmp(bmode, "direct"))
+ } else if(!strcasecmp(bmode, "direct")) {
broadcast_mode = BMODE_DIRECT;
- else {
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
+ free(bmode);
return false;
}
+
free(bmode);
}
-#if !defined(SOL_IP) || !defined(IP_TOS)
- if(priorityinheritance)
- logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
+ /* Delete all broadcast subnets before re-adding them */
+
+ for splay_each(subnet_t, s, &subnet_tree) {
+ if(!s->owner) {
+ splay_delete_node(&subnet_tree, node);
+ }
+ }
+
+ const char *const DEFAULT_BROADCAST_SUBNETS[] = { "ff:ff:ff:ff:ff:ff", "255.255.255.255", "224.0.0.0/4", "ff00::/8" };
+
+ for(size_t i = 0; i < sizeof(DEFAULT_BROADCAST_SUBNETS) / sizeof(*DEFAULT_BROADCAST_SUBNETS); i++) {
+ subnet_t *s = new_subnet();
+
+ if(!str2net(s, DEFAULT_BROADCAST_SUBNETS[i])) {
+ abort();
+ }
+
+ subnet_add(NULL, s);
+ }
+
+ for(config_t *cfg = lookup_config(&config_tree, "BroadcastSubnet"); cfg; cfg = lookup_config_next(&config_tree, cfg)) {
+ subnet_t *s;
+
+ if(!get_config_subnet(cfg, &s)) {
+ continue;
+ }
+
+ subnet_add(NULL, s);
+ }
+
+#if !defined(IP_TOS)
+
+ if(priorityinheritance) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform for IPv4 connections", "PriorityInheritance");
+ }
+
#endif
- if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
+#if !defined(IPV6_TCLASS)
+
+ if(priorityinheritance) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform for IPv6 connections", "PriorityInheritance");
+ }
+
+#endif
+
+ if(!get_config_int(lookup_config(&config_tree, "MACExpire"), &macexpire)) {
macexpire = 600;
+ }
- if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
+ if(get_config_int(lookup_config(&config_tree, "MaxTimeout"), &maxtimeout)) {
if(maxtimeout <= 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "Bogus maximum timeout!");
return false;
}
- } else
+ } else {
maxtimeout = 900;
+ }
+
+ char *afname = NULL;
- if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) {
- if(!strcasecmp(afname, "IPv4"))
+ if(get_config_string(lookup_config(&config_tree, "AddressFamily"), &afname)) {
+ if(!strcasecmp(afname, "IPv4")) {
addressfamily = AF_INET;
- else if(!strcasecmp(afname, "IPv6"))
+ } else if(!strcasecmp(afname, "IPv6")) {
addressfamily = AF_INET6;
- else if(!strcasecmp(afname, "any"))
+ } else if(!strcasecmp(afname, "any")) {
addressfamily = AF_UNSPEC;
- else {
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
+ free(afname);
return false;
}
+
free(afname);
}
- get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
+ get_config_bool(lookup_config(&config_tree, "Hostnames"), &hostnames);
- if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
+ if(!get_config_int(lookup_config(&config_tree, "KeyExpire"), &keylifetime)) {
keylifetime = 3600;
+ }
- get_config_int(lookup_config(config_tree, "AutoConnect"), &autoconnect);
- if(autoconnect < 0)
- autoconnect = 0;
+ if(!get_config_bool(lookup_config(&config_tree, "AutoConnect"), &autoconnect)) {
+ autoconnect = true;
+ }
+
+ get_config_bool(lookup_config(&config_tree, "DisableBuggyPeers"), &disablebuggypeers);
- get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
+ if(!get_config_int(lookup_config(&config_tree, "InvitationExpire"), &invitation_lifetime)) {
+ invitation_lifetime = 604800; // 1 week
+ }
read_invitation_key();
return true;
}
+// Get the port that `from_fd` is listening on, and assign it to
+// `sa` if `sa` has a dynamically allocated (zero) port.
+static bool assign_static_port(sockaddr_t *sa, int from_fd) {
+ // We cannot get a port from a bad FD. Bail out.
+ if(from_fd <= 0) {
+ return false;
+ }
+
+ int port = get_bound_port(from_fd);
+
+ if(!port) {
+ return false;
+ }
+
+ // If the port is non-zero, don't reassign it as it's already static.
+ switch(sa->sa.sa_family) {
+ case AF_INET:
+ if(!sa->in.sin_port) {
+ sa->in.sin_port = htons(port);
+ }
+
+ return true;
+
+ case AF_INET6:
+ if(!sa->in6.sin6_port) {
+ sa->in6.sin6_port = htons(port);
+ }
+
+ return true;
+
+ default:
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unknown address family 0x%x", sa->sa.sa_family);
+ return false;
+ }
+}
+
+typedef int (*bind_fn_t)(const sockaddr_t *);
+
+static int bind_reusing_port(const sockaddr_t *sa, int from_fd, bind_fn_t setup) {
+ sockaddr_t reuse_sa;
+ memcpy(&reuse_sa, sa, SALEN(sa->sa));
+
+ int fd = -1;
+
+ // Check if the address we've been passed here is using port 0.
+ // If it is, try to get an actual port from an already bound socket, and reuse it here.
+ if(assign_static_port(&reuse_sa, from_fd)) {
+ fd = setup(&reuse_sa);
+ }
+
+ // If we're binding to a hardcoded non-zero port, or no socket is listening yet,
+ // or binding failed, try the original address.
+ if(fd < 0) {
+ fd = setup(sa);
+ }
+
+ return fd;
+}
+
/*
Add listening sockets.
*/
static bool add_listen_address(char *address, bool bindto) {
- char *port = myport;
+ char *port = myport.tcp;
if(address) {
char *space = strchr(address, ' ');
+
if(space) {
*space++ = 0;
port = space;
}
- if(!strcmp(address, "*"))
+ if(!strcmp(address, "*")) {
*address = 0;
+ }
}
struct addrinfo *ai, hint = {0};
+
hint.ai_family = addressfamily;
+
hint.ai_socktype = SOCK_STREAM;
+
hint.ai_protocol = IPPROTO_TCP;
+
hint.ai_flags = AI_PASSIVE;
+#if HAVE_DECL_RES_INIT
+ res_init();
+
+#endif
int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
+
free(address);
if(err || !ai) {
break;
}
- if(found)
+ if(found) {
continue;
+ }
if(listen_sockets >= MAXSOCKETS) {
+ listen_sockets = MAXSOCKETS;
logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
+ freeaddrinfo(ai);
return false;
}
- int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
+ const sockaddr_t *sa = (sockaddr_t *) aip->ai_addr;
+ int from_fd = listen_socket[0].tcp.fd;
- if(tcp_fd < 0)
+ // If we're binding to a dynamically allocated (zero) port, try to get the actual
+ // port of the first TCP socket, and use it for this one. If that succeeds, our
+ // tincd instance will use the same port for all addresses it listens on.
+ int tcp_fd = bind_reusing_port(sa, from_fd, setup_listen_socket);
+
+ if(tcp_fd < 0) {
continue;
+ }
- int udp_fd = setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+ // If we just successfully bound the first socket, use it for the UDP procedure below.
+ // Otherwise, keep using the socket we've obtained from listen_socket[0].
+ if(!from_fd) {
+ from_fd = tcp_fd;
+ }
- if(tcp_fd < 0) {
- close(tcp_fd);
+ int udp_fd = bind_reusing_port(sa, from_fd, setup_vpn_in_socket);
+
+ if(udp_fd < 0) {
+ closesocket(tcp_fd);
continue;
}
- io_add(&listen_socket[listen_sockets].tcp, handle_new_meta_connection, &listen_socket[listen_sockets], tcp_fd, IO_READ);
- io_add(&listen_socket[listen_sockets].udp, handle_incoming_vpn_data, &listen_socket[listen_sockets], udp_fd, IO_READ);
+ listen_socket_t *sock = &listen_socket[listen_sockets];
+ io_add(&sock->tcp, handle_new_meta_connection, sock, tcp_fd, IO_READ);
+ io_add(&sock->udp, handle_incoming_vpn_data, sock, udp_fd, IO_READ);
if(debug_level >= DEBUG_CONNECTIONS) {
- char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
+ int tcp_port = get_bound_port(tcp_fd);
+ char *hostname = NULL;
+ sockaddr2str(sa, &hostname, NULL);
+ logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s port %d", hostname, tcp_port);
free(hostname);
}
- listen_socket[listen_sockets].bindto = bindto;
- memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
+ sock->bindto = bindto;
+ memcpy(&sock->sa, aip->ai_addr, aip->ai_addrlen);
listen_sockets++;
}
return true;
}
+void device_enable(void) {
+ if(devops.enable) {
+ devops.enable();
+ }
+
+ /* Run tinc-up script to further initialize the tap interface */
+
+ environment_t env;
+ environment_init(&env);
+ execute_script("tinc-up", &env);
+ environment_exit(&env);
+}
+
+void device_disable(void) {
+ environment_t env;
+ environment_init(&env);
+ execute_script("tinc-down", &env);
+ environment_exit(&env);
+
+ if(devops.disable) {
+ devops.disable();
+ }
+}
+
/*
Configure node_t myself and set up the local sockets (listen only)
*/
static bool setup_myself(void) {
- char *name, *hostname, *cipher, *digest, *type;
+ char *name, *type;
char *address = NULL;
bool port_specified = false;
return false;
}
- myself = new_node();
+ myname = xstrdup(name);
+ myself = new_node(name);
myself->connection = new_connection();
- myself->name = name;
- myself->connection->name = xstrdup(name);
- read_host_config(config_tree, name);
+ myself->connection->name = name;
+ read_host_config(&config_tree, name, true);
- if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
- myport = xstrdup("655");
- else
+ if(!get_config_string(lookup_config(&config_tree, "Port"), &myport.tcp)) {
+ myport.tcp = xstrdup("655");
+ } else {
port_specified = true;
+ }
+
+ myport.udp = xstrdup(myport.tcp);
myself->connection->options = 0;
myself->connection->protocol_major = PROT_MAJOR;
myself->options |= PROT_MINOR << 24;
- if(!get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental)) {
- experimental = read_ecdsa_private_key();
- if(!experimental)
+#ifdef DISABLE_LEGACY
+ myself->connection->ecdsa = read_ecdsa_private_key(&config_tree, NULL);
+ experimental = myself->connection->ecdsa != NULL;
+
+ if(!experimental) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "No private key available, cannot start tinc!");
+ return false;
+ }
+
+#else
+
+ if(!get_config_bool(lookup_config(&config_tree, "ExperimentalProtocol"), &experimental)) {
+ myself->connection->ecdsa = read_ecdsa_private_key(&config_tree, NULL);
+ experimental = myself->connection->ecdsa != NULL;
+
+ if(!experimental) {
logger(DEBUG_ALWAYS, LOG_WARNING, "Support for SPTPS disabled.");
+ }
} else {
- if(experimental && !read_ecdsa_private_key())
+ if(experimental) {
+ myself->connection->ecdsa = read_ecdsa_private_key(&config_tree, NULL);
+
+ if(!myself->connection->ecdsa) {
+ return false;
+ }
+ }
+ }
+
+ rsa_t *rsa = read_rsa_private_key(&config_tree, NULL);
+
+ if(rsa) {
+ myself->connection->legacy = new_legacy_ctx(rsa);
+ } else {
+ if(experimental) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Support for legacy protocol disabled.");
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "No private keys available, cannot start tinc!");
return false;
+ }
}
- if(!read_rsa_private_key())
- return false;
+#endif
/* Ensure myport is numeric */
+ if(!is_decimal(myport.tcp)) {
+ uint16_t port = service_to_port(myport.tcp);
- if(!atoi(myport)) {
- struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
- sockaddr_t sa;
- if(!ai || !ai->ai_addr)
+ if(!port) {
return false;
- free(myport);
- memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
- sockaddr2str(&sa, NULL, &myport);
+ }
+
+ free(myport.tcp);
+ myport.tcp = int_to_str(port);
+
+ free(myport.udp);
+ myport.udp = xstrdup(myport.tcp);
}
/* Read in all the subnets specified in the host configuration file */
- for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ for(config_t *cfg = lookup_config(&config_tree, "Subnet"); cfg; cfg = lookup_config_next(&config_tree, cfg)) {
subnet_t *subnet;
- if(!get_config_subnet(cfg, &subnet))
+ if(!get_config_subnet(cfg, &subnet)) {
return false;
+ }
subnet_add(myself, subnet);
}
/* Check some options */
- if(!setup_myself_reloadable())
+ if(!setup_myself_reloadable()) {
return false;
+ }
- get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
- get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
+ get_config_bool(lookup_config(&config_tree, "StrictSubnets"), &strictsubnets);
+ get_config_bool(lookup_config(&config_tree, "TunnelServer"), &tunnelserver);
strictsubnets |= tunnelserver;
- if(get_config_int(lookup_config(config_tree, "MaxConnectionBurst"), &max_connection_burst)) {
+ if(get_config_int(lookup_config(&config_tree, "MaxConnectionBurst"), &max_connection_burst)) {
if(max_connection_burst <= 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "MaxConnectionBurst cannot be negative!");
return false;
}
}
- if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
- if(udp_rcvbuf <= 0) {
+ if(get_config_int(lookup_config(&config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
+ if(udp_rcvbuf < 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
return false;
}
+
+ udp_rcvbuf_warnings = true;
}
- if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
- if(udp_sndbuf <= 0) {
+ if(get_config_int(lookup_config(&config_tree, "UDPSndBuf"), &udp_sndbuf)) {
+ if(udp_sndbuf < 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!");
return false;
}
+
+ udp_sndbuf_warnings = true;
}
+ get_config_int(lookup_config(&config_tree, "FWMark"), &fwmark);
+#ifndef SO_MARK
+
+ if(fwmark) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "FWMark not supported on this platform!");
+ return false;
+ }
+
+#endif
+
int replaywin_int;
- if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) {
+
+ if(get_config_int(lookup_config(&config_tree, "ReplayWindow"), &replaywin_int)) {
if(replaywin_int < 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!");
return false;
}
+
replaywin = (unsigned)replaywin_int;
sptps_replaywin = replaywin;
}
+#ifndef DISABLE_LEGACY
/* Generate packet encryption key */
- if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
- cipher = xstrdup("blowfish");
+ char *cipher;
+
+ if(!get_config_string(lookup_config(&config_tree, "Cipher"), &cipher)) {
+ cipher = xstrdup("aes-256-cbc");
+ }
if(!strcasecmp(cipher, "none")) {
myself->incipher = NULL;
- } else if(!(myself->incipher = cipher_open_by_name(cipher))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
- return false;
+ } else {
+ myself->incipher = cipher_alloc();
+
+ if(!cipher_open_by_name(myself->incipher, cipher)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
+ cipher_free(myself->incipher);
+ myself->incipher = NULL;
+ free(cipher);
+ return false;
+ }
}
free(cipher);
- timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000});
+ timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval) {
+ keylifetime, jitter()
+ });
/* Check if we want to use message authentication codes... */
int maclength = 4;
- get_config_int(lookup_config(config_tree, "MACLength"), &maclength);
+ get_config_int(lookup_config(&config_tree, "MACLength"), &maclength);
if(maclength < 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "Bogus MAC length!");
return false;
}
- if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
- digest = xstrdup("sha1");
+ char *digest;
+
+ if(!get_config_string(lookup_config(&config_tree, "Digest"), &digest)) {
+ digest = xstrdup("sha256");
+ }
if(!strcasecmp(digest, "none")) {
myself->indigest = NULL;
- } else if(!(myself->indigest = digest_open_by_name(digest, maclength))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
- return false;
+ } else {
+ myself->indigest = digest_alloc();
+
+ if(!digest_open_by_name(myself->indigest, digest, maclength)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
+ digest_free(myself->indigest);
+ myself->indigest = NULL;
+ free(digest);
+ return false;
+ }
}
free(digest);
+#endif
/* Compression */
+ int incompression = 0;
- if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
- if(myself->incompression < 0 || myself->incompression > 11) {
+ if(get_config_int(lookup_config(&config_tree, "Compression"), &incompression)) {
+ myself->incompression = incompression;
+
+ switch(myself->incompression) {
+ case COMPRESS_LZ4:
+#ifdef HAVE_LZ4
+ break;
+#else
logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "LZ4 compression is unavailable on this node.");
return false;
- }
- } else
- myself->incompression = 0;
+#endif
- myself->connection->outcompression = 0;
+ case COMPRESS_LZO_HI:
+ case COMPRESS_LZO_LO:
+#ifdef HAVE_LZO
+ break;
+#else
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "LZO compression is unavailable on this node.");
+ return false;
+#endif
+
+ case COMPRESS_ZLIB_9:
+ case COMPRESS_ZLIB_8:
+ case COMPRESS_ZLIB_7:
+ case COMPRESS_ZLIB_6:
+ case COMPRESS_ZLIB_5:
+ case COMPRESS_ZLIB_4:
+ case COMPRESS_ZLIB_3:
+ case COMPRESS_ZLIB_2:
+ case COMPRESS_ZLIB_1:
+#ifdef HAVE_ZLIB
+ break;
+#else
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "ZLIB compression is unavailable on this node.");
+ return false;
+#endif
+
+ case COMPRESS_NONE:
+ break;
+
+ default:
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "Compression level %i is unrecognized by this node.", myself->incompression);
+ return false;
+ }
+ } else {
+ myself->incompression = COMPRESS_NONE;
+ }
/* Done */
graph();
- if(strictsubnets)
- load_all_subnets();
- else if(autoconnect)
- load_all_nodes();
+ load_all_nodes();
/* Open device */
devops = os_devops;
- if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
- if(!strcasecmp(type, "dummy"))
+ if(get_config_string(lookup_config(&config_tree, "DeviceType"), &type)) {
+ if(!strcasecmp(type, DEVICE_DUMMY)) {
devops = dummy_devops;
- else if(!strcasecmp(type, "raw_socket"))
+ } else if(!strcasecmp(type, "raw_socket")) {
devops = raw_socket_devops;
- else if(!strcasecmp(type, "multicast"))
+ } else if(!strcasecmp(type, "multicast")) {
devops = multicast_devops;
+ }
+
+#ifdef HAVE_SYS_UN_H
+ else if(!strcasecmp(type, "fd")) {
+ devops = fd_devops;
+ }
+
+#endif
#ifdef ENABLE_UML
- else if(!strcasecmp(type, "uml"))
+ else if(!strcasecmp(type, "uml")) {
devops = uml_devops;
+ }
+
#endif
#ifdef ENABLE_VDE
- else if(!strcasecmp(type, "vde"))
+ else if(!strcasecmp(type, "vde")) {
devops = vde_devops;
+ }
+
#endif
+ free(type);
}
- if(!devops.setup())
+ get_config_bool(lookup_config(&config_tree, "DeviceStandby"), &device_standby);
+
+ if(!devops.setup()) {
return false;
+ }
- if(device_fd >= 0)
+ if(device_fd >= 0) {
io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
+ }
/* Open sockets */
- if(!do_detach && getenv("LISTEN_FDS")) {
+ const char *listen_fds = getenv("LISTEN_FDS");
+
+ if(!do_detach && listen_fds) {
sockaddr_t sa;
socklen_t salen;
- listen_sockets = atoi(getenv("LISTEN_FDS"));
+ listen_sockets = atoi(listen_fds);
#ifdef HAVE_UNSETENV
unsetenv("LISTEN_FDS");
#endif
if(listen_sockets > MAXSOCKETS) {
+ listen_sockets = MAXSOCKETS;
logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
return false;
}
for(int i = 0; i < listen_sockets; i++) {
- salen = sizeof sa;
- if(getsockname(i + 3, &sa.sa, &salen) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(errno));
+ const int tcp_fd = i + 3;
+ salen = sizeof(sa);
+
+ if(getsockname(tcp_fd, &sa.sa, &salen) < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", tcp_fd, sockstrerror(sockerrno));
return false;
}
#ifdef FD_CLOEXEC
- fcntl(i + 3, F_SETFD, FD_CLOEXEC);
+ fcntl(tcp_fd, F_SETFD, FD_CLOEXEC);
#endif
int udp_fd = setup_vpn_in_socket(&sa);
- if(udp_fd < 0)
+
+ if(udp_fd < 0) {
return false;
+ }
- io_add(&listen_socket[i].tcp, (io_cb_t)handle_new_meta_connection, &listen_socket[i], i + 3, IO_READ);
+ io_add(&listen_socket[i].tcp, (io_cb_t)handle_new_meta_connection, &listen_socket[i], tcp_fd, IO_READ);
io_add(&listen_socket[i].udp, (io_cb_t)handle_incoming_vpn_data, &listen_socket[i], udp_fd, IO_READ);
if(debug_level >= DEBUG_CONNECTIONS) {
- hostname = sockaddr2hostname(&sa);
+ char *hostname = sockaddr2hostname(&sa);
logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
free(hostname);
}
listen_sockets = 0;
int cfgs = 0;
- for(config_t *cfg = lookup_config(config_tree, "BindToAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ for(config_t *cfg = lookup_config(&config_tree, "BindToAddress"); cfg; cfg = lookup_config_next(&config_tree, cfg)) {
cfgs++;
get_config_string(cfg, &address);
- if(!add_listen_address(address, true))
+
+ if(!add_listen_address(address, true)) {
return false;
+ }
}
- for(config_t *cfg = lookup_config(config_tree, "ListenAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ for(config_t *cfg = lookup_config(&config_tree, "ListenAddress"); cfg; cfg = lookup_config_next(&config_tree, cfg)) {
cfgs++;
get_config_string(cfg, &address);
- if(!add_listen_address(address, false))
+
+ if(!add_listen_address(address, false)) {
return false;
+ }
}
if(!cfgs)
- if(!add_listen_address(address, NULL))
+ if(!add_listen_address(address, NULL)) {
return false;
+ }
}
if(!listen_sockets) {
/* If no Port option was specified, set myport to the port used by the first listening socket. */
- if(!port_specified) {
- sockaddr_t sa;
- socklen_t salen = sizeof sa;
- if(!getsockname(listen_socket[0].udp.fd, &sa.sa, &salen)) {
- free(myport);
- sockaddr2str(&sa, NULL, &myport);
- if(!myport)
- myport = xstrdup("655");
- }
+ if(!port_specified || atoi(myport.tcp) == 0) {
+ listen_socket_t *sock = &listen_socket[0];
+
+ uint16_t tcp = get_bound_port(sock->tcp.fd);
+ free(myport.tcp);
+ myport.tcp = int_to_str(tcp);
+
+ uint16_t udp = get_bound_port(sock->udp.fd);
+ free(myport.udp);
+ myport.udp = int_to_str(udp);
}
- xasprintf(&myself->hostname, "MYSELF port %s", myport);
+ xasprintf(&myself->hostname, "MYSELF port %s", myport.tcp);
myself->connection->hostname = xstrdup(myself->hostname);
+ char *upnp = NULL;
+ get_config_string(lookup_config(&config_tree, "UPnP"), &upnp);
+ bool upnp_tcp = false;
+ bool upnp_udp = false;
+
+ if(upnp) {
+ if(!strcasecmp(upnp, "yes")) {
+ upnp_tcp = upnp_udp = true;
+ } else if(!strcasecmp(upnp, "udponly")) {
+ upnp_udp = true;
+ }
+
+ free(upnp);
+ }
+
+ if(upnp_tcp || upnp_udp) {
+#ifdef HAVE_MINIUPNPC
+ upnp_init(upnp_tcp, upnp_udp);
+#else
+ logger(DEBUG_ALWAYS, LOG_WARNING, "UPnP was requested, but tinc isn't built with miniupnpc support!");
+#endif
+ }
+
/* Done. */
last_config_check = now.tv_sec;
bool setup_network(void) {
init_connections();
init_subnets();
- init_nodes();
- init_edges();
- init_requests();
- if(get_config_int(lookup_config(config_tree, "PingInterval"), &pinginterval)) {
+ if(get_config_int(lookup_config(&config_tree, "PingInterval"), &pinginterval)) {
if(pinginterval < 1) {
pinginterval = 86400;
}
- } else
+ } else {
pinginterval = 60;
+ }
- if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout))
+ if(!get_config_int(lookup_config(&config_tree, "PingTimeout"), &pingtimeout)) {
pingtimeout = 5;
- if(pingtimeout < 1 || pingtimeout > pinginterval)
+ }
+
+ if(pingtimeout < 1 || pingtimeout > pinginterval) {
pingtimeout = pinginterval;
+ }
- if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize))
+ if(!get_config_int(lookup_config(&config_tree, "MaxOutputBufferSize"), &maxoutbufsize)) {
maxoutbufsize = 10 * MTU;
+ }
- if(!setup_myself())
+ if(!setup_myself()) {
return false;
+ }
- if(!init_control())
+ if(!init_control()) {
return false;
+ }
- /* Run tinc-up script to further initialize the tap interface */
-
- char *envp[5] = {NULL};
- xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
- xasprintf(&envp[1], "DEVICE=%s", device ? : "");
- xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- xasprintf(&envp[3], "NAME=%s", myself->name);
-
- execute_script("tinc-up", envp);
-
- for(int i = 0; i < 4; i++)
- free(envp[i]);
+ if(!device_standby) {
+ device_enable();
+ }
/* Run subnet-up scripts for our own subnets */
close all open network connections
*/
void close_network_connections(void) {
- for(list_node_t *node = connection_list->head, *next; node; node = next) {
+ for(list_node_t *node = connection_list.head, *next; node; node = next) {
next = node->next;
connection_t *c = node->data;
+
/* Keep control connections open until the end, so they know when we really terminated */
- if(c->status.control)
+ if(c->status.control) {
c->socket = -1;
+ }
+
c->outgoing = NULL;
terminate_connection(c, false);
}
- if(outgoing_list)
- list_delete_list(outgoing_list);
+ list_empty_list(&outgoing_list);
if(myself && myself->connection) {
subnet_update(myself, NULL, false);
- terminate_connection(myself->connection, false);
free_connection(myself->connection);
}
for(int i = 0; i < listen_sockets; i++) {
io_del(&listen_socket[i].tcp);
io_del(&listen_socket[i].udp);
- close(listen_socket[i].tcp.fd);
- close(listen_socket[i].udp.fd);
+ closesocket(listen_socket[i].tcp.fd);
+ closesocket(listen_socket[i].udp.fd);
}
- char *envp[5] = {NULL};
- xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
- xasprintf(&envp[1], "DEVICE=%s", device ? : "");
- xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- xasprintf(&envp[3], "NAME=%s", myself->name);
-
exit_requests();
exit_edges();
exit_subnets();
exit_nodes();
exit_connections();
- execute_script("tinc-down", envp);
+ if(!device_standby) {
+ device_disable();
+ }
- if(myport) free(myport);
+ free(myport.tcp);
+ free(myport.udp);
- for(int i = 0; i < 4; i++)
- free(envp[i]);
+ if(device_fd >= 0) {
+ io_del(&device_io);
+ }
- devops.close();
+ if(devops.close) {
+ devops.close();
+ }
exit_control();
+ free(scriptextension);
+ free(scriptinterpreter);
+
return;
}
projects / tinc / blobdiff